Experimental Physics and
Industrial Control System

Benjamin Sailer <[email protected]> · Thu, 31 Jan 2002 16:34:10 +0100 (CET)

Hello again,

reviewing documents of EPICS base 3.14 and the new sequencer again,
I came to the "handwaving" conclusion that the unability to run
et_wish with R3.14 has nothing to do with the commented-out
threadInit()-call in the et_wish sources. Nevertheless maybe somebody
can clean up my confusion about osiThread.h and the threadInit function.

In "AppDevGuide.pdf" for R3.14.0alpha1 on pages 224 ff. one can read:

...
20.13 osiThread.h
...
void threadInit(void);
...
which means osiThread.h contains this function call. Compiling and
installing the tarballs of base-3.14.0alpha1 and base-3.14.0beta1 I
did not find this header file at all.

Going further, one can read:

threadInit - This is called automatically by the thread implementation.
             NOTE: This should not appear in osiThread.h

? This statement seems to be directed to developers of libCom asking
where else to put this function?

main - On systems requiring a main routine, threadInit MUST be called
       before any thread or semaphore routines. Since the errlog facility,
       which is used by many components of libCom, calls threadCreate,
       threadInit should be called before any other routines supplied with
       epics base. If a main routine finishes its work but wants to leave
       other threads running it can call threadExitMain, which should be
       the last statement in main.  

So its necessary to call threadInit also with the new sequencer. Nevertheless
a version of the sequencer I compiled seemed to work at least partly without
this call.

So concluding: Is it needed or not, and if so, where do I find it (or any
replacing call)?

Is this the reason for crashing et_wish or are there other incompatibilities
of these sources with R3.14 (which would be consistent with a running
version of it under Solaris 8 and R3.13.4)?

Greetings

Benjamin

-- 
*****************************************************************
Benjamin Sailer
eMail: [email protected]
*****************************************************************
You'll see it's all a show, keep on laughing as You go
just remember that the last laugh is on You

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System